docs: def conversations_read(self, id):
          """
          Marks a single conversation as read.
          
          Returns the updated `conversation dict`_.
          
          WARNING: This method is currently not documented in the official API and
          might therefore be unstable.
          """
          id = self.__unpack_id(id)
          url = '/api/v1/conversations/{0}/read'.format(str(id))
          return self.__api_request('POST', url)